<html>
    <head>
        <title>Example 01</title>
        <link href="example_02.css" rel="stylesheet">
    </head>
    <body>
        <p>渲染流程</p>
        <div>
            <p>green</p>
            <div class="red">red</div>
        </div>
        <div id="blue">blue</div>
    </body>
    <script src="example_02.js" type="text/javascript" charset="utf-8"></script>
</html>